Problem with Mesh Ray base point

unhandled

#1

Is it possible to input a coordinate for mesh ray base point in lieu of an actual point in model space referenced into grasshopper? The script only works with a referenced parameter. The work around here I suppose would be to align the vector point to the referenced point. View Analysis City.3dm (77.6 KB)
Isovist_3d 1.gh (29.1 KB)